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Q.

Two coherent sources of different intensities send waves which interfere. The ratio of the maximum intensity to the minimum intensity is 25. The intensities are in the ratio:

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a

25 : 1

b

5 : 1

c

9 : 4

d

625 : 1

answer is C.

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Detailed Solution

a1+a2a1-a2 = 5 ⇒ a1+a2 = 5(a1-a2)a1a2 = 32 l1l2 = (a1a2)2 = 94

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Two coherent sources of different intensities send waves which interfere. The ratio of the maximum intensity to the minimum intensity is 25. The intensities are in the ratio: